Manowar falls under the category of real animals?
Dark Angel is found both under "dark" and "angels" but Megadeth is categorized under "Death" only, not under "Misspelling"? (I would add Rammstein to the Misspelling part cuz the location that the name is refering to is called Ramstein.) Also Edguy, their class
teacher was named Eduard ...
Ragnarok is a term out of the book of revelation and not a nordic (Viking) term?
names such as Iron Maiden, Skid Row, Anthrax or Biohazard are rather social/political related than "Deadly things"
and also, great names such as Nightwish, Appocalyptica, Type O Negative, Cannible Corpse, Orbituary, Deicide, Massarcre/Massacra, Rage Against the Machine, Savatage, Dreath Theatre, Death Switch Engage, Celtic Frost, AC/DC, Entombed etc. are missing there.
location related names: Saxon, Dancig, Children of Bodom, Rammstein, Mekong Delta, Tigers of Pantan, Capathian Forest, Siebenbürgen, Sodom, Nazareth, Walls of Jericho, Manilla Road, Amon Amarth (a mountain in Lord of the Rings), Opeth (Opet, the City of the
Moon in "Sunbird" by Wilbur Smith), Salem, Hawaii (Marty Friedman's old band, 1st thrash/speed metal ever!)
political/millitary related names: Rage Against the Machine, System of a Down, Iron Maiden, Rise Against, Skid Row, Agnostic Front, Oppressor, Aggressor, Thy Majesty, Holocausto, Queen, Annihilator, Battery, Warpath, Warloard, Manowar, Raging Mob, Assassin,
W.A.S.P. (White Angelo Saxon Protestants), Arch Enemy, Overkill, Emperor, Darkthrone, Nuclear Assault, Protector, Riot, Sacred Reich, Steel Attack
medical related names: Libido Airbag, Haemorrahge, Catamenia :), Anthrax, Suffocation, Desease, Dismembered, Autopsy, Dying Fetus, Asphyx, Catatonia, Pestilence
i guess there are still a lot to be added if one has time ... so far for today :P